Bug 215216

Description:
imported/w3c/web-platform-tests/svg/import/interact-zoom-01-t-manual.svg

This first instance of this showed up with the migration app-bound change in https://trac.webkit.org/changeset/265018/webkit which caused a constant failure.  Then when it wasreverted in https://trac.webkit.org/changeset/265037/webkit the test returned the test to constant pass.

It looks like https://trac.webkit.org/changeset/265192/webkit has introduced a flaky failure with the test. 

History:
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fsvg%2Fimport%2Finteract-zoom-01-t-manual.svg&platform=ios&flavor=wk2&limit=50000&style=release

Diff Log: 
--- /Volumes/Data/worker/iOS-13-Simulator-WK2-Tests-EWS/build/layout-test-results/imported/w3c/web-platform-tests/svg/import/interact-zoom-01-t-manual-expected.txt
+++ /Volumes/Data/worker/iOS-13-Simulator-WK2-Tests-EWS/build/layout-test-results/imported/w3c/web-platform-tests/svg/import/interact-zoom-01-t-manual-actual.txt
@@ -1,24 +1,5 @@
 layer at (0,0) size 800x600
   RenderView at (0,0) size 800x600
 layer at (0,0) size 800x600
-  RenderSVGRoot {svg} at (0,0) size 800x600
-    RenderSVGHiddenContainer {defs} at (0,0) size 0x0
-    RenderSVGContainer {g} at (8,2) size 110x69
-      RenderSVGContainer {g} at (8,2) size 110x69
-        RenderSVGText {text} at (5,1) size 55x8 contains 1 chunk(s)
-          RenderSVGInlineText {#text} at (0,0) size 55x8
-            chunk 1 text run 1 at (5.00,7.00) startOffset 0 endOffset 21 width 54.03: "Test default value of"
-        RenderSVGText {text} at (5,8) size 62x8 contains 1 chunk(s)
-          RenderSVGInlineText {#text} at (0,0) size 62x8
-            chunk 1 text run 1 at (5.00,14.00) startOffset 0 endOffset 21 width 61.04: "zoomAndPan attribute."
-        RenderSVGContainer {g} at (15,35) size 103x36
-          RenderSVGEllipse {circle} at (15,35) size 36x36 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#000000]}] [cx=20.00] [cy=32.00] [r=10.00]
-          RenderSVGEllipse {circle} at (32,35) size 36x36 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#000000]}] [cx=30.00] [cy=32.00] [r=10.00]
-          RenderSVGEllipse {circle} at (82,35) size 36x36 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#000000]}] [cx=60.00] [cy=32.00] [r=10.00]
-          RenderSVGEllipse {circle} at (65,35) size 36x36 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#000000]}] [cx=50.00] [cy=32.00] [r=10.00]
-          RenderSVGEllipse {circle} at (49,35) size 36x36 [stroke={[type=SOLID] [color=#0000FF]}] [fill={[type=SOLID] [color=#000000]}] [cx=40.00] [cy=32.00] [r=10.00]
-    RenderSVGContainer {g} at (16,516) size 385x64
-      RenderSVGText {text} at (10,310) size 231x38 contains 1 chunk(s)
-        RenderSVGInlineText {#text} at (0,0) size 231x38
-          chunk 1 text run 1 at (10.00,340.00) startOffset 0 endOffset 16 width 230.19: "$Revision: 1.6 $"
-    RenderSVGRect {rect} at (0,0) size 800x600 [stroke={[type=SOLID] [color=#000000]}] [x=1.00] [y=1.00] [width=478.00] [height=358.00]
+  RenderBlock {HTML} at (0,0) size 800x600
+    RenderBody {BODY} at (8,8) size 784x584